关键词: 中孔, 分子筛, 催化活性, 结构表征, 钼化合物, MCM-48, 孔径, 微波辐射

Mesoporous molecular sieve containing molybdenum, Mo-MCM-48, was rapidly synthesized under microwave radiation. Effects of the reaction pressure and reaction time on the relative crystallinity of Mo-MCM-48 were investigated. The samples were characterized by using XRD, TEM, FT-IR and N2 adsorption techniques. The results show that Mo-MCM-48 molecular sieve with good crystallinity can be rapidly prepared under microwave radiation. Mo-MCM-48 was well synthesized at 0.481 MPa for 2 h. Framework IR spectra of the samples affirm that the molybdenum cations are incorporated into frameworks of Mo-MCM-48 molecular sieve. Calcination results indicate that Mo-MCM-48 molecular sieve has high thermal stability. Catalytic oxidation of styrene with aqueous hydrogen peroxide (ω=26%) indicates that Mo-MCM- 48 is catalytically active.

Key words: MESOPORE, MOLECULAR SIEVE, CATALYTIC ACTIVITY, STRUCTURE CHARACTERISTICS, MOLYBDENUM COMPOUNDS, PORE SIZE, MICROWAVE RADIATION